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Hi All,
There was a good combination of shorebird and warbler nocturnal movements
this week. True migration seemed more apparent among the warblers. The two
most common warblers were Black-and-white Warbler (an estimated 58 birds)
and American Redstart (56 birds). The next two most common warblers were
Yellow Warbler (29) and Canada Warbler (27). Northern Waterthrush also
contributed with 22 estimated birds. Overall, 12 species of warbler were
recorded.
The most common shorebird was Semipalmated Sandpiper with an estimated 90
birds. The number of these birds tend to be grossly underestimated either by
visual observation or by acoustic recording. It is likely that more than 90
birds were recorded during the week. A sound clip with spectrogram from one
of the flocks flying high overhead can be found here
<https://johnfkearney.com/2019/08/11/1st-week-of-august-2019-beaver-river-ya
rmouth-county-nova-scotia/> . The next most common shorebird was Spotted
Sandpiper with an estimated 23 birds. A total of seven shorebird species
were noted. A Solitary Sandpiper in the early morning of 2 August was the
first for the year.
Last year, my nocturnal recordings began on the evening of 5 August.
Comparing the data for 5 to 7 August in 2018 and 2019, the total estimated
numbers of migrants were 451 and 205, respectively. Three nights is a short
time for a comparison so it will be interesting to do the same over 7 days
next week.
John
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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Calibri",sans-serif'>Hi =
All,<o:p></o:p></span></p><p><span =
style=3D'font-size:12.0pt;color:black'>There was a good combination of =
shorebird and warbler nocturnal movements this week. True migration =
seemed more apparent among the warblers. The two most common warblers =
were Black-and-white Warbler (an estimated 58 birds) and American =
Redstart (56 birds). The next two most common warblers were Yellow =
Warbler (29) and Canada Warbler (27). Northern Waterthrush also =
contributed with 22 estimated birds. Overall, 12 species of warbler were =
recorded.</span><span =
style=3D'font-size:12.0pt'><o:p></o:p></span></p><p><span =
style=3D'font-size:12.0pt;color:black'>The most common shorebird was =
Semipalmated Sandpiper with an estimated 90 birds. The number of these =
birds tend to be grossly underestimated either by visual observation or =
by acoustic recording. It is likely that more than 90 birds were =
recorded during the week. A sound clip with spectrogram from one of the =
flocks flying high overhead can be found <a =
href=3D"https://johnfkearney.com/2019/08/11/1st-week-of-august-2019-beave=
r-river-yarmouth-county-nova-scotia/">here</a>. The next most common =
shorebird was Spotted Sandpiper with an estimated 23 birds. A total of =
seven shorebird species were noted. A Solitary Sandpiper in the early =
morning of 2 August was the first for the =
year.<o:p></o:p></span></p><p><span =
style=3D'font-size:12.0pt;color:black'>Last year, my nocturnal =
recordings began on the evening of 5 August. Comparing the data for 5 to =
7 August in 2018 and 2019, the total estimated numbers of migrants were =
451 and 205, respectively. Three nights is a short time for a comparison =
so it will be interesting to do the same over 7 days next =
week.<o:p></o:p></span></p><p><span =
style=3D'font-size:12.0pt;color:black'>John</span><span =
style=3D'font-size:12.0pt'><o:p></o:p></span></p></div></body></html>
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